Study of seismic activity during mining of a rockburst hazardous deposit with counter frontsстатья
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Дата последнего поиска статьи во внешних источниках: 12 июня 2024 г.
Аннотация:The article presents the results of a study of peculiarities of rock mass failure during the
development of a rockburst hazardous deposit by counter fronts on the example of one
of the Khibiny deposits. In order to identify the peculiarities of the seismic process
development at different stages of the deposit development, changes in seismic activity
and stress field have been analysed. The seismic process has been studied on the
basis of a multistage model of solid fracture and a modified concentration criterion (or
the parameter of convergence of seismic events), based on which seismic events have
been clustered. The approach applied takes into account the characteristics of seismic
events in the time-coordinate-energy space, which makes it possible to determine the
peculiarities of interaction between different-scale events. The seismic data have been
compared with the calculated characteristics of the active stress field during the periods
between bulk blasts in the junction sections of the two mining fronts. The relevance of
the research is due to the fact that the approach used allows studying the features of
energy exchange in the rock mass on the basis of data on the released seismic energy
and data on the redistribution of stresses on the example of a separate section of the
rock mass.